Flexible templet.



T. A. ROY & J. H. HINDLEY. FLEXIBLE TEMPLET. APPLICATION FILED NOV. 4,1912.

1,078,879. Patented Nov. 18,1913.

ATTORNEY ins12171511) STAWENT FIO E1.

THOMAS A. BOY, 0F DORGHESTER, AND J OI-IN H. HINDLEY, 0FMALDENfMASSACHU- SETTS, ASSIGNORS 0F QNE-T'HIRD TO JAMES PRICE, OFMALDEN, MASSACHUSETTS. L

FLEXIBLE TEMPLET.

Specification of Letters Patent.

Patented Nov. 18, 1913.

Application filed November 4, 1912. Serial No. 729,493.

To all whom it may concern:

Be it known that we, THOMAS A. ROY, a citizen of the Dominion of Canada,residing at Dorchester, in the county of Suffolk and State ofMassachusetts, and JOHN H. HIND- LEY, residing at Malden, in the countyof Middlesex and State of Massachusetts, have invented a new and usefulImprovement in Flexible Templets, of which the following is aspecification.

Our invention relates to the tools used by wood workers, iron workersand draftsmen for laying out and duplicating various simple and compoundcurves.

Our objects are: First, to provide a tool or instrument capable of beingset to any desired or existing curve, whether composed of portions of.thearc of a circle or any othei' geometrical curve. Second, provldemeans of fixing the curve so formed rigidly and positively. Third, toprovide adjustable means for accurately locating said curvev withreference to any straight line contiguous to it, or forming a part inconnection with it, in a manner similar to the use of the wood workerssquare. or his bevel. We attain these objects by the mechanismillustrated in the accompanying drawing, in which:

Figure 1 is a lan view of our flexible templet, arranged as a square;Fig. 2 is a similar view of a portion of the tool arranged as a bevel;Fig. 3 is an edge view showing the square attachment; and Fig. 4 is anedge view showing the connection of the flexible bar, and rigid bar bymeans of the'adjustable connecting bars.

Similar-letters refer to similar parts in the several views.

The construction of our device lows:

A is a flexible bar of metal, preferably steel, to which is riveted anumber, (in this case ten) of right angle pieces a a. Riveted loosely orpivoted to these are the slotted adj usting bars B B. The bar C isrigid, preferis as folably of steel, and has tapped into it theithumbbars B B are the ordinates. The rigid bar C is slightly checked, orformed in fine 'rid 'es at right angles .to each other as shown in igs.1 and 2, for the purpose of afi'ording a firmer grip to the adjustingbars B B 7 barC. Itis obvious, however, that the bars B B being pivoted,practicall at both ends, may be placed in. any angu ar position to therigid bar 0. This would place the right angle piece D in the sameangular position and thus form a bevel instead of a square. A rightangle piece similar to D may be used on the opposite end of the deviceby makingthe pivot hole for the thumb screw 0 in the opposite end..

Fig. 2 shows the right angle piece D detached from the right angle piecea and placed under the rigid bar C, where it is secured by the thumbscrew 0 and adjusted to form a bevel while the adjusting bars B B remainat substantially right angles to the rigid bar C. I

In using our device, say for fitting wood or metal parts to existingcurved portions, all the thumb screws 0 0 'on the rigid bar C areloosened, the rigid bar placed in the desired position, and theadjusting bars B B pushed out, one at a time, forcing the flexible bar--A against the existing curved surface, and fastenin them by -the thumbscrews 6 c. To render the curve accurate it may be necessary to gothrough this operation more than once, but it is obvious that a veryaccurate curve may be thus formed, and that when so formed may berigidly maintained. For instance; in fitting flooring incurved cornersor around the base of a column, or in similar places, not only can anaccurate counterpart of the existing curve be made, but by the use ofthe right angle piece D, set against the edge of the portion of flooralready laid, and then applied in the same manner to the portion for theuse of draftsmen, but the are not of' suflicient rigidity, when adjusteto be useful' to woodworkers or iron Workers. There is no provision madefor a square or bevel attachment whereby the curve to be made may befornied with reference to any straight edge or surface connected with itor related to it.

Our device fulfils these conditions and is in actual, practical, andsuccessful use for these purposes.

We therefore claim: In a flexible templet, the combination 01 a flexiblebar, a rigid bar, a multiplicity of adjusting bars pivoted to saidflexible bar and slidabiy attachable to said rigid bar,

and a right angle bar adjustably connected to said rigid bar to formtherewith a square or a bevelv substantially as described.

THOMAS A. BOY. JOHN H. HINDLEY.

Witnesses:

\ OSCAR E. PERRIGO,

MARY E. MGPHERSON.

